------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-14
05:53 -------
The first thing is that read_file_guts mallocs the whole file which seems
wrong. That accounts for
500M.
The next problem is that keep every identifier we parsed even though we don't
need it.
3014 calls for 12,273,008 bytes: thread_a000a1ec |0x0 | _dyld_start | _start |
main | toplev_main |
do_compile | compile_file | c_common_parse_file | c_parse_file | yyparse |
yylex | _yylex | c_lex |
c_lex_with_flags | cpp_get_token | _cpp_lex_token | _cpp_handle_directive |
do_ifdef | lex_macro_node
| _cpp_lex_token | _cpp_lex_direct | lex_identifier | ht_lookup_with_hash |
_obstack_newchunk |
xmalloc | malloc | malloc_zone_malloc
And this is where the problem comes from.
No there is no leak we keep a reference to all of thes identifiers but this
seems like we should not.
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|[3.4/4.0 Regression] cpp |[3.4/4.0 Regression] high
|memory leak with undefined |cpp memory usage with
|symbols |undefined symbols
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17798
